Coal cutting machine



I I gli r 2 2 4 may 14 1940 H. D. FANNING Er A1. 2,200,419

COAL CUTTING MACHINE Filed Apri]by l2, 1939 4 Sheets-Sheet l y l 97a IIIIIIIIIIIIIIIINIIIHUHIIIIIIIIIIHIIIIIIIIIIIIIIIIIIIIIWMHUHWWIH `Z abafzZ/ggtm I i Zaydf'mmg,

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COAL CUTTING MACHINE Filed April 12, 1939 4 Sheets-Sheet 2 Inventor:

Y Attorneys May 14 1940- H. p.. FANNING ll-:r AL 2.200.419

COAL CUTTING MACHINE Filed April 12, 1939 4 Sheets-Sheet 5 A torneys May 14, 1940. H. D. FANNING ETAL 2,200,419

coAL cUTT/ING MACHINE Filed April 12, 1959 4 sheets-sheet 4 0 o' `L o o i l .A Nd o O @i Z y o 7 o o ||1r|r 1 xlll'll g o .Px 7

/l/ o |||||,s l llllu Q Jj@ o O o `9` O Inventor: a/feramzz'ny, [ayimz'zg v A totneys Patented May 14, 1940 COAL CUTTING MACHINE Hubert D. Fanning and Loyd V. Fanning,

Bokoshe, Okla.

Application April 12, 1939, Serial No. 267,502

3 Claims.

This invention relates to a coal cutting machine, the general object of the invention being to provide a machine which is mainly designed for small mine owners or operators as the machine is so constructed that it can be manufactured to sell at low cost, is easy of operation and requires but little power to operate it. y

Another object of the invention is to provide an endless member having cutting teeth thereon, a support for the same, a frame structure adapted to be erected in the mine and which carries the supporting member, with means for feeding the supporting member across the frame structure as the endless member is being actuated. l

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims. p

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views,

and in which:

Figure 1 is a top plan view of the invention.

Figure 2 is a front view thereof.

Figure 3 is a section on the line 3--3 of Figure l.

Figure 4 is a section on the line 4 4 of Figure 1.

Figure 5 is a section on the line 5-5 of Figure 2.

Figure 6 is a section on the line of Figure 2.

Figure 7 is a section on the line 'I-l of Figure 2.

Figure 8 is a section on the line 8-3 of Figure 2.

Figure 9 is a section on the l1ne 9--9 of Figure 1.

Figure 10 is a section on the line Ill-I6 of Figure 1.

Figure 1l is a fragmentary plan view with parts omitted showing how the cutting teeth of the endless chain engage the toothed wheel.

Figure l2 is an edge view of one of the toothed wheels.

Figure 13 is a view of one of the cutting teeth.`

Two parts are connected together by the bolts 3 and the two parts I and 2 are provided with projecting parts 4 which form a channel at the sides and ends of the member. Portions of the two members I and 2 are out away to provide 5 the substantially circular openings 5 in which l are located the toothed wheels 6, each of which includes a pair of toothed disks I connected together in spaced relation by a cog S. One of these double pair of wheels is located at each end of the member 2 and one or more intermediate the ends thereof and endless chains 9 pass over these wheel parts, these chains carrying the curved cutting teeth Il). These parts are so arranged that the bases of the teeth will enter the 15 notches of the toothed disks I so that the endless chains are caused to move by the wheel assemblies. A shaft I I is journaled between the parts I and 2 and has worms I2 thereon meshing with the cog wheels or worm members 8 so that when 20 the shaft II is rotated the wheel assemblies will be rotated and thus movement will be imparted to the two endless chains. The shaft II extends to a point adjacent the front end of the platform I where it may be connected to a motor, crank 25 or any other suitable means for rotating it and a guard I3 extends upwardly from the platform I adjacent the inner or front end of the part 2 as shown in Figures 1 and 3. An upright frame is provided for supporting the platform I and 30 the parts attached thereto and this frame includes the jacks III, the bottom cross bar I5 and the top cross bar I6. A carriage Il is suitably attached to the underside of the front portion of the platform'l and carries the wheels I8 which 35 engage grooves I9 in the sides of the cross bar I6 so that the platform and the parts carried thereby can be moved back and forth over the upper cross bar of the supporting frame. Movement in one direction is imparted to the platform by 40 the power means which drive the shaft II through means of a toothed wheel 20 engaging rack teeth 2| formed on the upper edge of the bar I6 and this wheel 20 can be connected with the shaft II or disconnected therefrom by shift- 45 ing the gear 2l on shaft II through means of the lever 22. These parts are so constructed and arranged that the platform will be moved on the supporting frame at a speed which will conform to the cut being made in the coal surface by the 50 cutting teeth.

The cross bar I6 can be adjusted vertically on the jacks I4 orY placed at an angle thereon through means of a vertical row of holes 25 in each jack any one of which is adapted to receive a bolt 26 passing through a hole at each end of the cross bar I6 and the cross member I5 can be adjustably connected to the lower end of the jacks I4 in any suitable manner. Preferably the lower end of each jack is provided with the teeth 21 for engaging rough parts of the mine floor and the upper part of each jack is formed of a sliding part 28 having the teeth 29 at its upper end, this sliding part being connected with a threaded shank 3l] passing through a threaded hole in a gear 3l with which meshes a gear 32 having a stub shaft 33 connected therewith and extending through a hole in the hollow upper part of the jack so that a handle can be connected with the shaft 33 to raise and lower the part 28 to engage and disengage the top of the jack with the ceiling of the mine.

Thus it will be seen that an operator after setting up the supporting frame can move the platform I across the frame by manipulating the lever 22 to connect the shaft I I with the ratchet wheel 23 and this rotation of the shaft II will drive the two cutting chains so that a cut is made in the wall of the mine. The teeth should be so formed as to make a cut deep enough for the passage of the entire cutting member composed of the bars I and 2 and the parts enclosed thereby.

As before stated this invention is mainly designed for use by operators of small mines where the large machines will be too expensive and require too much time.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts provided that such changes fall within the scope of the appended claims.

Having described the invention, what is claimed as new is:

l. A coal cutting machine comprising an elongated member having a channel in its sides and ends, said member being composed of upper and lower members connected together and having circular recesses therein, a wheel assembly rotatably arranged in each recess and including upper and lower toothed disks and a worm wheel between the disks and connected therewith, endless chains passing over the toothed disks, teeth carried by the chain and having portions engaging the teeth of the disks, a shaft rotatably supported by the two members of the elongated member and worms carried by said shaft and engaging the worm wheel,

2. A coal cutting machine comprising an elongated member having a channel in its sides and ends, toothed wheels carried by the member, endless chains passing over the toothed wheels, cutting teeth carried by the chains, means for rotating the wheels to move the chains and means for supporting the member, said means including an upright frame including a cross member having rack teeth thereon, a carriage connected with the elongated member and slidably connected with the cross member, a ratchet wheel carried by the elongated member and engaging the rack teeth, and manually operated means for connecting the drive means of the toothed wheels with saidratchet wheel.

3. A coal cutting machine comprising a plat form, a top piece connected with the platform and of less length thereof, said platform and top piece having a channel formed at the edges and ends of the same, circular recesses formed in said platform and top piece, a wheel assembly rotatably arranged in each recess including upper and lower disks and a worm wheel between the disks connected therewith, endless chains passing over the toothed wheels, cutting teeth carried by the chains, a shaft rotatably supported between the platform and top member, worms on said shaft engaging the worm wheels, a pair of jacks, cross pieces adjustably connected therewith, one cross piece having a rack thereon, a carriage connected with the platform and engaging said cross piece, a ratchet wheel on the platform engaging the rack teeth, manually operated means for connecting the shaft with the ratchet wheel.

HUBERT D. FANNING. LOYD V. FANNING. 

